MODIFICATIONS. ADVANCED HUMAN INGENUITY. CANALS. Artificial waterways built to connect rivers, lakes, or oceans. IRRIGATION CANALS. CANALS. SHIPPING CANALS. CANALS. TRANSPORTATION CANALS. DAMS. A barrier constructed across a waterway to control the flow or raise the level of water.
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ADVANCED HUMAN INGENUITY
A barrier constructed across a waterway to control the flow or raise the level of water